| Team | Tm | Tier | Game |
|---|---|---|---|
| Colorado Rockies | COL | 2.57 | 199809040_SDN_COL |
| Los Angeles Dodgers | LAN | 1.64 | 199809020_PHI_LAN |
| San Francisco Giants | SFN | 1.19 | 199809040_SFN_LAN |
| Houston Astros | HOU | 1.05 | 199809020_HOU_ATL |
| Montreal Expos | WAS | 0.97 | 199809020_WAS_SFN |
| Team | Tm | Tier | Game |
|---|---|---|---|
| Oakland Athletics | OAK | -8.34 | 199809040_TBA_OAK |
| Detroit Tigers | DET | -6.25 | 199809020_TEX_DET |
| Florida Marlins | MIA | -5.6 | 199809020_SLN_MIA |
| Seattle Mariners | SEA | -4.34 | 199809040_BAL_SEA |
| Kansas City Royals | KCA | -1.51 | 199809040_KCA_ANA |
Based on accumulated WAA for this season up to 1998-09-04.
| Rank | WAA | Name | IP | Tm |
|---|---|---|---|---|
| +040+ | 5.28 | Robb Nen | 76.7 | SFN |
| +057+ | 4.51 | Ugueth Urbina | 59 | WAS |
| +066+ | 4.01 | Trevor Hoffman | 63.3 | SDN |
| +067+ | 4 | Jeff Shaw | 77 | TOT |
| +078+ | 3.66 | Dennis Cook | 60 | NYN |
| +080+ | 3.64 | Albie Lopez | 69.7 | TBA |
| +082+ | 3.52 | Mike Jackson | 57 | CLE |
| +084+ | 3.43 | Mariano Rivera | 54 | NYA |
| +086+ | 3.41 | John Wetteland | 54.7 | TEX |
| +088+ | 3.34 | Chuck McElroy | 62 | COL |
| +093+ | 3.16 | Shigetoshi Hasegawa | 89.3 | ANA |
| +098+ | 3.02 | Steve Reed | 77 | TOT |
| +101+ | 2.99 | Paul Quantrill | 70 | TOR |
| +102+ | 2.95 | Tom Gordon | 68.7 | BOS |
| +104+ | 2.93 | Jason Christiansen | 59.3 | PIT |
| +105+ | 2.92 | John Hudek | 56.7 | TOT |
| +110+ | 2.86 | Ramiro Mendoza | 114 | NYA |
| +115+ | 2.73 | Terry Mulholland | 78.3 | CHN |
| +119+ | 2.68 | Donne Wall | 62.7 | SDN |
| +122+ | 2.65 | Juan Acevedo | 84 | SLN |
| +125+ | 2.53 | Mike DeJean | 74.3 | COL |
| +131+ | 2.43 | Xavier Hernandez | 53.3 | TEX |
| +134+ | 2.37 | Graeme Lloyd | 33.3 | NYA |
| +133+ | 2.37 | Ricardo Rincon | 58 | PIT |
| +136+ | 2.36 | Bill Simas | 58.7 | CHA |
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